/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.undertow.servlet.api;
import java.lang.reflect.Constructor;
import java.util.EventListener;
import io.undertow.servlet.UndertowServletMessages;
import io.undertow.servlet.core.ApplicationListeners;
import io.undertow.servlet.util.ConstructorInstanceFactory;
/**
* @author Stuart Douglas
*/
public class ListenerInfo {
private final Class<? extends EventListener> listenerClass;
private volatile InstanceFactory<? extends EventListener> instanceFactory;
public ListenerInfo(final Class<? extends EventListener> listenerClass, final InstanceFactory<? extends EventListener> instanceFactory) {
this.listenerClass = listenerClass;
this.instanceFactory = instanceFactory;
if(!ApplicationListeners.isListenerClass(listenerClass)) {
throw UndertowServletMessages.MESSAGES.listenerMustImplementListenerClass(listenerClass);
}
}
public ListenerInfo(final Class<? extends EventListener> listenerClass) {
this.listenerClass = listenerClass;
try {
final Constructor<EventListener> ctor = (Constructor<EventListener>) listenerClass.getDeclaredConstructor();
ctor.setAccessible(true);
this.instanceFactory = new ConstructorInstanceFactory<>(ctor);
} catch (NoSuchMethodException e) {
throw UndertowServletMessages.MESSAGES.componentMustHaveDefaultConstructor("Listener", listenerClass);
}
}
public InstanceFactory<? extends EventListener> getInstanceFactory() {
return instanceFactory;
}
public void setInstanceFactory(InstanceFactory<? extends EventListener> instanceFactory) {
this.instanceFactory = instanceFactory;
}
public Class<? extends EventListener> getListenerClass() {
return listenerClass;
}
@Override
public String toString() {
return "ListenerInfo{" +
"listenerClass=" + listenerClass +
'}';
}
}